JP4571073B2 - Straightening material - Google Patents

Description

  The present invention relates to a single member used when an additional optical drop cable is laid on an existing optical fiber cable for a trunk line.

Conventionally, a self-supporting optical fiber cable has a main body of a supporting line and an optical fiber cable for a trunk line, and when this is suspended in the air, both ends of the supporting line are fixed to a power pole. The main body of the optical fiber cable can be held. In this self-supporting optical fiber cable, the support wire and the optical fiber cable main body are integrated using a hanger member , so there is no need to negotiate the support wire alone, and only one negotiation is required. It is a waste. Such an optical fiber cable is shown in Japanese Patent Laid-Open No. 2000-338376.

  However, in the above-described conventional optical fiber cable, a plurality of optical fiber cables are housed in the trunk optical fiber cable. However, the recent spread of optical communication, particularly the rapid use of optical fiber cables in the Internet. Along with the increase, it has been necessary to lay an additional optical drop cable at the location of the existing optical fiber cable, not just with the existing optical fiber cable. However, there is a restriction on the laying of communication cables, and only one suspension line can be laid between utility poles, and an additional optical drop cable has to be integrated with the existing trunk optical fiber cable.

In order to solve this problem, there has been a cable erection method using a spiral hanger as shown in Japanese Patent Application Laid-Open No. 2004-80999. This cable erection method is a cable erection method for laying a new cable together with the existing cable on an existing cable hanger erected on a spiral hanger, and has a guide that can hold the existing cable inside By moving the means along the existing cable while passing through the spiral hanger, the tow rope is extended along the line, and after connecting the new cable to the tip of the tow rope, the new cable is fed out. However, the new cable is installed in the hanger by winding up the tow rope.
JP 2000-338376 A JP 2004-80999 A

  However, in the conventional cable erection method described above, a spiral hanger member is attached to an existing cable, and an additional optical drop cable is inserted through this hanger member. Installation is very time consuming, and the cost of the hanger member is not low. As a result, this construction method is expensive.

  The present invention has been made in view of the above-described conventional problems, and a member to be used is inexpensive, and a single member that can very easily lay an optical drop cable to be added to an existing optical fiber cable. It is to provide.

The present invention for solving the above problems, a suspended line and optical fiber cable to the existing cable attached integrally with the hanger member, an Article of members for attaching an additional optical drop cables, wherein Article of member, said optical drop cable cylindrical insertion portion for inserting the, which is fixed to protrude outward from the insertion portion is fitted into between the gap between the main body portion of the optical fiber cable and the suspended line e Bei and Rukakarigo portion, the engaging portion is Rutotomoni formed thin base end portion is thicker tip in the sectional shape in the protruding direction, is the tip of the tip portion and the hanging line said light When inserting into the gap between the fiber cable body and the fiber cable, the elastic band shrinks when passing through the gap, and expands after passing through the gap and expands the suspension line and the fiber optic cable body. The lock piece is formed wherein with a spring property to prevent escape from the gap of the proximal end the at fitting state between the main body portion of the optical cable with the engaging portion said suspended line It is formed so as to engage with the main body of the suspension line and the optical cable .

The present invention also provides a suspended line and the existing cable and optical fiber cable is installed integrally with the hanger member, an Article of members for attaching an additional optical drop cable, the Article of members, e Bei a cylindrical insertion portion to which the light drop cable is inserted, and an engaging portion which is fitted and fixed between the body portion of the optical fiber cable and is projected outwardly from the insertion portion and the suspended line The engaging portion is formed by two engaging members so that the hanger member can be sandwiched, and a stopper piece is formed so as to be opposed to the tip portions of the two engaging members , respectively. The outer portions of the two engaging members are each formed with a plurality of cuts .

  Further, the insertion portion of the present invention is characterized in that a seam that can be opened and closed is formed at a predetermined position on the circumference, and an opening and closing guide that protrudes outward is formed on one side of the seam. It is.

  The monolithic member of the present invention is a member that is inserted into a gap between a conventional hanging line of an existing optical cable and an optical drop cable, and particularly uses a molded part manufactured by integral molding.

A feature of the one-piece member of the present invention is that it is provided with a structure attached to an existing cable. It is to comprise an insert to be fixed shape between the existing hanging line and optical drop cable as a engaging portion.

  The one-piece member of the present invention is configured as described above, and when laying an additional optical drop cable on an existing cable, the engaging portion of the one-piece member is inserted and fixed with one touch, It is only necessary to open and insert the joint of the insertion portion, and the operation can be performed very easily and in a short time, and the cost for laying operation can be greatly reduced.

  In addition, since the monolithic member used in the present invention is an inexpensive material such as polyethylene and has a relatively simple structure, the cost of the monolithic member can be reduced. Cost reduction is possible.

  Furthermore, the present invention can be used as it is when laying an optical drop cable once, once the unifying member is attached to the existing cable, and the installation work of the new unifying member can be omitted. Therefore, it is possible to reduce the cost of laying work as well as the cost of the monolithic member.

  The best mode of the straightening member according to the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing a use state of the monolithic member according to the present invention, FIG. 2 is a perspective view showing the entire monolithic member of FIG. 1, and FIG. 3 shows an embodiment of the monolithic member according to the present invention. FIG. 4 is a horizontal sectional view of the XX plane of FIG. 3, and FIG. 5 is a perspective view showing an embodiment of the single member according to the present invention.

  As shown in FIG. 1 or FIG. 2, the monolithic member according to the present invention is a single strip for additionally attaching an optical cable to a cable in which the suspension cable 1 and the optical cable 4 for the trunk line are integrally attached by a hanger member 7. The unifying member 10 includes a cylindrical insertion portion 11 through which an optical drop cable 8 that is an additional optical cable is inserted, and a protruding portion extending outward from the insertion portion 11. And an engaging portion 12 that is inserted and fixed in the gap 9 of the main body portion 4 of the optical cable. In the embodiment shown in FIG. 2, the two engaging portions 12 protrude.

  The unifying member 10 is made of a synthetic resin material such as polyethylene and has elasticity. The insertion portion 11 is formed with a seam 11a that can be opened and closed at a predetermined position on the circumference formed in a cylindrical shape, that is, a position opposite to the engagement portion 12, and protrudes outwardly to one side of the joint. An opening / closing guide 11b is formed. The joint is formed such that the side that holds the optical cable to be inserted is a long arc and the upper side is short.

  Further, as shown in FIG. 2, the engaging portion 12 is formed in a shape that engages with the gap 9 between the suspension wire 1 and the main body portion 4 of the optical cable, with the base end portion 13 being thick and the tip end portion 14 being thin in the cross-sectional shape. Then, lock pieces 15 and 16 having spring properties are formed at the distal end portion 14 of the engaging portion 12. The lock piece 15 is long and the lock piece 16 is short. The lock piece 15 contacts the main body 4 side of the existing optical cable, while the short lock piece 16 contacts and engages the suspension line 1 side.

  The suspension wire 1 uses a core wire 2 in which a plurality of steel wires are twisted, and the core wire 2 is formed by covering extrusion molding that covers a synthetic resin such as polyethylene that becomes the outer skin 3. It has sufficient strength when installed between utility poles. And the unifying member 10 which has the insertion part 11 in this hanging wire 1 is integrated at predetermined intervals by molding.

  Further, the main body portion 4 of the optical cable for the trunk line is formed by coating extrusion molding in which the optical fiber core 5 is coated with a synthetic resin such as polyethylene serving as the outer cover 6, and in the embodiment, a steel wire is at the center. A round cable having a plurality of optical fibers arranged around is used. The optical drop cable 8 is used for pulling in subscribers. Generally, as shown in the figure, a two-core flat type is used, but various types of cables having a large number of core wires are used. Of course, an optical drop cable having a shape can be used.

  When the distal end portion 14 of the engaging portion 12 is inserted into the gap 9 between the suspension wire 1 and the optical cable main body 4, the base end portion 13 becomes the suspension wire 1 and the optical cable main body portion 4. When the locking pieces 15 and 16 are engaged with each other and pass through the gap 9, the lock pieces 15 and 16 are shrunk due to their elasticity, and when the passage is finished, the locking pieces 15 and 16 are spread and cannot be removed from the gap 9. It is fixed to. And when inserting the additional optical drop cable 8 in the insertion part 11, the joint 11a is opened by putting a finger on the opening-and-closing guide 11b, and the optical drop cable 8 is inserted in the insertion part 11.

  As described above, the unifying member 10 can be attached to an existing cable with a single touch. By inserting an additional optical cable through the insertion portion 11 of the unifying member 10, an additional optical drop cable can be very easily attached. It can be laid. And since this unifying member 10 is a molded article of a synthetic resin material having a relatively simple structure, its part cost is also low, and it can be made low even when combined with construction costs.

3 and FIG. 4, the single member 20 of the other embodiment is formed by integrally forming the hanging line 1 and the main body 4 of the optical cable for the trunk line with the hanger member 7 in the same manner as the single member 10 described above. This is a strip member for additionally attaching the optical cable 8 to the existing optical cable formed. The unifying member 20 is a cylindrical insertion portion 21 through which an additional optical cable is inserted, and protrudes from the insertion portion 21, and is inserted and fixed in the gap 9 between the suspension line 1 and the main body portion 4 of the optical cable for the trunk line. Are provided so that the hanger member 7 is sandwiched between the two engaging portions 22, 22, and the stopper pieces 23, 23 are provided at positions opposed to the tip portions. Is formed.

The unifying member 20 formed in this way is inserted and fixed in the gap 9 between the suspension line 1 and the main body portion 4 of the optical cable for the trunk line at a position where the hanger member 7 is sandwiched. And the stopper pieces 23 and 23 become a stopper with respect to the direction from which the unification member 20 comes off, the unification member 20 does not come off easily, and the unification member 20 is stably fixed to the main-body part 4 of an optical cable. is there. A plurality of cuts 22a are formed on the outer side of the flat plate-like engaging portion 22 of the one-piece member 20 so that the legs of the engaging portion 22 are easily opened and the engagement with the hanger member 7 is ensured. .

  As described above, the unifying member 20 can be attached to the existing cable with a single touch similarly to the unifying member 10 described above, and by inserting an additional optical cable through the insertion portion 21 of the unifying member 20. It is very easy to install additional optical drop cables. And since this unifying member 20 is a molded article of a synthetic resin material having a relatively simple structure, its component cost is also low, and it can be made low even when combined with construction costs.

Moreover, the monolithic member 30 of another embodiment shown in FIG. 5 includes a cylindrical insertion portion 31 through which the additional optical cable 8 is inserted, and a main body portion of the suspension line 1 and the optical cable for the trunk line that protrudes from the insertion portion 31. 4 is provided with an engaging portion 32 that is inserted and fixed between the suspension wire 4 and the suspension wire fitting piece 33 having a substantially semicircular cross section to be fitted to the suspension wire 1 and an optical cable. An optical cable fitting piece 34 having a substantially semicircular cross section to be fitted to the main body 4 is formed.

  The unifying member 30 configured as described above is fixed by fitting the hanging wire fitting piece 33 to the hanging wire 1 and fitting the optical cable fitting piece 34 to the main body portion 4 of the optical cable. In this way, the unifying member 30 is inserted into the gap between the existing cable suspension 1 and the optical cable main body 4 in the lateral position and rotated to the suspension 1 and the main body 4. By attaching the hanging wire fitting piece 33 and the optical cable fitting piece 34, it can be attached with one touch, and by inserting an additional optical cable through the insertion portion 31 of this unifying member 30, it is very easy to add an additional optical drop. A cable can be laid. And since this single member 30 is the molded product of the synthetic resin material of a comparatively simple structure similarly to the single member 10 and the single member 20, the component cost is also cheap, and it combines with construction expense. Can also be made inexpensively.

  As described above, when the additional optical drop cable is laid on the existing cable, the strip member of the present invention is fixed by inserting and fixing the engagement portion of the strip member with one touch. It is only necessary to open the seam and insert it, and the work can be done very easily and in a short time, and the cost for laying work can be greatly reduced.

  Further, once the strip-forming member of the present invention is attached, the number of drop cables to be added is not limited to one, and two or three can be added. And even in that case, since it is not necessary to add a new single member, cost and labor can be greatly reduced.

  In addition, this invention is not limited to embodiment mentioned above, Of course, various aspects are possible within a claim. For example, the shape, material, etc. can of course be selected as appropriate. For example, the shape of the engaging portion of the unifying member can be variously shaped according to the shape of the gap between the hanging line and the optical fiber cable, and the joint of the insertion portion is not in close contact with the opening. Of course, it is possible even if a portion is provided.

FIG. 1 is an exploded perspective view showing a use state of a single member according to the present invention. It is a perspective view which shows the whole strip forming member of FIG. It is a perspective view which shows the Example of the unification member concerning this invention. It is a horizontal sectional view of the XX plane of FIG. It is a perspective view which shows the Example of the unification member concerning this invention.

DESCRIPTION OF SYMBOLS 1 Suspension wire 2 Core wire 3 Outer skin 4 Main body part 5 Optical fiber core 6 Outer skin 7 Hanger member 8 Optical drop cable 9 Crevice 10 Straightening member 11 Insertion part 12 Engagement part 13 Base end part 14 End part 15 Lock piece 16 Lock piece 20 One line Member 21 insertion portion 22 engagement portion 23 stopper piece 30 straight member 31 insertion portion 32 engagement portion 33 hanging wire fitting piece 34 optical cable fitting piece

Claims (3)

A hanging line and the optical fiber cable to the existing cable attached integrally with the hanger member, an Article of members for attaching an additional optical drop cable,
The one-piece member is
The insertion portion of the cylindrical for inserting the optical drop cable,
An engaging portion which is fixed is fitted between clearance between projecting outward from the insertion portion main body portion of the optical fiber cable and the suspended lines,
Bei to give a,
The engaging portion is formed thinner base end portion is thicker tip in the sectional shape in the protruding direction Rutotomoni, the tip the tip to the portion in the gap between the main body portion of the optical fiber cable and the suspended line When passing through the gap, the spring is contracted by its elasticity, and after passing through the gap, it expands to prevent it from coming out of the gap between the suspension line and the main body of the optical fiber cable. The lock piece is formed , and the base end portion is engaged with the suspension line and the main body portion of the optical cable in a state where the engagement portion is inserted between the suspension line and the main body portion of the optical cable. A monolithic member characterized by being formed. A hanging line and the optical fiber cable to the existing cable attached integrally with the hanger member, an Article of members for attaching an additional optical drop cable,
The Article of member engages which is fitted and fixed between the light drop cable and the insertion portion of the cylindrical inserting is protruded outward from the insertion portion main body portion of the optical fiber cable and the suspended line With the joint,
Bei to give a,
The engaging portion, the formed by the two engaging members to be able to sandwich the hanger member, with two of said engaging member stopper piece so as respectively to oppose the tip portion of is formed, A monolithic member characterized in that a plurality of cuts are formed in outer portions of the two engaging members. 3. The insertion portion according to claim 1 , wherein a seam that can be opened and closed is formed at a predetermined position on a circumference, and an opening and closing guide that protrudes outward is formed on one side of the seam. The striped member described.

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